Tiger Woods is off to a solid start at the WGC-Bridgestone Invitational.

He got stronger as the day went on, finishing with a four-under 66 on the day.

The seven-time champ at Firestone Country Club is the favorite to win the tournament. Many see this as an important tuneup that could help to boost Tiger's confidence ahead of the PGA Championship next week.

We'll be following Tiger all weekend long. Be sure to check back for more live updates as the tournament moves along.

Tiger Woods tees off for Round 2 on Friday in the afternoon group, at 1:10 p.m. ET.